The secret was not at first worked with success. It passed from its original Lancashire possessor to a gentleman who succeeded in making the article of a sufficiently good quality; and at so low a price that it found a ready introduction in the print-works. But he could not produce it in large quantity without employing assistants, whom he feared to trust with a knowledge of a manufacture so simple and so profitable. In employing men to assist in some parts of the work, and shutting them out from others, their curiosity, or jealousy, could not be restrained. On one or two occasions they caused the officers of Excise to break in upon him when he was burning his starch, under the allegation that he was engaged in illicit practices. His manufactory was broken into in the night by burglars, who only wanted to rob him of his secret. Once the place was maliciously burned down. Other difficulties, far too numerous for present detail, were encountered. Still, he produced the British gum in sufficient quantities for it to yield him a liberal income. At last, in a week of sickness, he was pressed by the head of a well-known firm of calico-printers for a supply. He got out of bed; went to his laboratory; had the fire kindled; put on his vessel of plate-iron; calcined his starch, added the water, observed the temperature; and all the while held conversation with his keen-eyed customer, whom he had unsuspectingly allowed to be present. It is enough to say that this acute calico-printer never required any more British gum of the convalescent's making. Gradually the secret spread, although the original purchaser of it still retained a share of the manufacture. When penny postage came into operation, it was at first doubtful whether adhesive labels could be made sufficiently good and low-priced, which would not have been the case with gum-arabic. British gum solved the difficulty; and the manufacturer made a contract to supply it for the labels. In the second year of his contract, a rumor was spread, that the adhesive matter on the postage stamps was a deleterious substance, made of the refuse of fish, and other disgusting materials. The great British gum secret was then spread far and wide. The public was extensively informed that the postage-label poison was made simply of--potatoes. MY LITTLE FRENCH FRIEND.